University of Southern California

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AT&T Reservationless Phone Conferencing Instructions

ITS offers an AT&T phone conferencing service that is easy to use and eliminates the need to make reservations, so you will no longer need to call an external carrier for a call-in phone number each time you place a conference call.

For information about pricing, see the pricing section of the AT&T Phone Conferencing Service page.

Organizing a Reservationless Conference Call

The person organizing the conference call is commonly referred to as the host. The host will need to give the other conference call participants the following information:

Please note that for caller-paid calls, the caller pays for the phone call but not for the conference call.

Joining a Reservationless Phone Conference

  1. Dial the toll-free or caller-paid number provided by the host (the person organizing the phone conference).
  2. Enter your participant code (or host code if you are the person organizing the call) followed by the # sign when prompted.
  3. If prompted to state your name, please state your name. The system may use this recording to announce your arrival and departure when you connect to and disconnect from a conference call.
  4. You will now be connected to the phone conference call.
  5. To disconnect from the conference call, simply hang up.

Advanced Features

The following advanced features are accessible to the conference-call host by using the host code. For more detailed information about advanced features, see the Getting Help section below.

Getting Help

For more information, please contact AT&T’s Customer Care group at 800-526-2655 or the ITS Communications Services Group (CSG) at 213-740-3814.

Click here to download a copy of the AT&T Reservationless Phone Conferencing Reservation Manual.

Last updated:
October 23, 2009

AT&T Phone Conferencing

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